KR20240058855A - Method for producing asphalt mixture composition - Google Patents

Abstract

The present invention relates to a method for producing an asphalt mixture composition, the method comprising: (1) heating the asphalt composition to a temperature in the range of 110 to 190° C. to obtain a first input stream; (2) providing one or more thermosetting reactive compounds to obtain a second input stream; and (3) homogenizing the streams (1) and (2) in at least a first tank equipped with a rotor stator.

Description

Method for producing asphalt mixture composition

The present invention relates to a method for producing an asphalt mix composition.

Asphalt is a black-tar-like aggregate of substances containing mainly asphaltenes and maltenes, and is used for paving and road laying purposes. Because asphalt is thermoplastic and viscoelastic, it exhibits large fluctuations over a range of temperatures, such as cracking in cold climate conditions and softening in hot climate conditions.

To increase the thermal stability of asphalt, the introduction of thermosetting reactive compounds such as isocyanates has been introduced into asphalt.

WO 01/30911 A1 discloses an asphalt composition comprising about 1 to 8% by weight of polymeric MDI, based on the total weight of the composition, wherein the polymeric MDI has a functionality of at least 2.5. The invention also relates to a method of preparing the above asphalt composition using a reaction time of less than 2 hours.

WO 01/30912 A1 discloses an aqueous asphalt emulsion comprising, in addition to asphalt and water, an emulsifiable polyisocyanate. The present invention also relates to an aggregate composition comprising the above emulsion and a method for producing the composition.

On the other hand, WO 2018/228840 A1 discloses an improved asphalt composition exhibiting improved physical properties in that they are more consistent over a certain temperature range, wherein asphalt is mixed with a thermosetting reactive compound and the mixture is heated for at least 2.5 hours. It is obtained by a process involving stirring while

Further improvement of the process can be achieved through improved reactor and equipment modifications. Here, US RE39289 E discloses an apparatus and method for producing asphalt.

US 8201986 B2 is a hot mix asphalt plant comprising a counter-flow rotating drum unit with an asphalt expander without moving parts that can convert an existing hot mix asphalt plant into a dual-mode asphalt plant. A mixed asphalt plant is being launched.

US 10695769 B2 also discloses an apparatus and related method for recycling one or more fractions of bitumen-containing material comprising a dissolution vessel, a tumbler disposed therein and one or more solvent distributors.

Although the state of the art discloses several processes for obtaining asphalt mixture compositions, there is an unmet need for time efficient methods.

Surprisingly, it has been found that the objectives identified above are met by providing a process for preparing an asphalt mixture composition as described below, wherein the asphalt composition and the thermoset reactive compound are homogenized in a tank equipped with a rotor stator. . This process involving a rotor stator is known to dramatically reduce response times.

Accordingly, in one aspect, the invention claimed herein relates to a method of making an asphalt mixture composition, the method comprising: (1) heating the asphalt composition to a temperature in the range of 110 to 190° C. to produce a first input stream; Obtaining; (2) providing one or more thermosetting reactive compounds to obtain a second input stream; and (3) homogenizing the streams (1) and (2) in at least a first tank equipped with a rotor stator.

In another aspect, the invention claimed herein relates to an asphalt mixture composition obtained or obtainable according to the above-mentioned process.

In another aspect, the invention claimed herein relates to the use of asphalt mixture compositions for paving and weathering applications.

Figure 1 shows a schematic diagram of a plant for carrying out the method of the invention.
Figure 2 shows a schematic diagram of a plant for carrying out the method of the invention comprising a first tank and a second tank.

Before describing the compositions and formulations of the present invention, it should be understood that the present invention is not limited to the specific compositions and formulations described, as such compositions and formulations may naturally vary. It should also be understood that the terminology used herein is not intended to be limiting, as the scope of the invention will be limited only by the appended claims.

As used herein, the terms “comprising,” “includes,” and “consisting of” are synonymous with “including,” “including,” or “including,” and are inclusive, open, and additional. It does not exclude any members, elements or method steps not mentioned. As used herein, the terms “comprising,” “includes,” and “consisting of,” will be understood to include the terms “consisting of,” “consisting of,” and “consisting of.”

Additionally, in the specification and claims, terms such as “first,” “second,” “third,” or “(a),” “(b),” “(c),” and “(d)” refer to similar elements. It is used to distinguish between things and is not necessarily explained sequentially or chronologically. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that embodiments of the invention described herein are capable of operation in a different order than that described or illustrated herein. “First”, “Second”, “Third” or “(A)”, “(B)” and “(C)” or “(a)”, “(b)”, “(c)” , "(d)", "i", "ii", etc., when they relate to a method or step of use or analysis, there is no consistency in time or time interval between the steps, i.e., as set forth herein above or below. Likewise, unless otherwise indicated herein, steps may be performed simultaneously or there may be time intervals of seconds, minutes, hours, days, weeks, months or even years between these steps.

In the following passages, various aspects of the invention are defined in more detail. Each aspect so defined may be combined with other aspect(s) unless otherwise specified. In particular, any feature indicated as being preferred or advantageous may be combined with any other feature or features indicated as being preferred or advantageous.

Reference throughout this application to “an embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Accordingly, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this disclosure may, but are not necessarily all referring to the same embodiment. Additionally, as will be apparent to those skilled in the art from this disclosure, features, structures, or characteristics in one or more embodiments may be combined in any suitable manner. Additionally, while some embodiments described herein include some features included in other embodiments and not other features, combinations of features of other embodiments are within the scope of the present invention and may be incorporated into the different embodiments as will be understood by those skilled in the art. means forming an embodiment. For example, any of the embodiments claimed in the appended claims may be used in any combination.

Additionally, the range defined throughout the specification also includes the final value. That is, 'range from 1 to 10' or 'between 1 and 10' means that both 1 and 10 are included in the range. Non-integer values that fall within ranges such as 1.1, 1.2, etc. are also considered included. For the avoidance of doubt, the Applicant shall have equivalent rights under applicable law.

For the purposes of the present invention, the term “rotor stator” is intended to refer to a specific device or impeller. A “rotor” is an electrical component that rotates and is housed within a stationary component, the stator. The rotor stator works by continuously drawing product into the rotor and expelling it radially through precision-machined holes in the stator. This radial velocity and resulting impact causes the product to strike the slots and surfaces of the stator, destroying it and ultimately shearing the particles. The product is then cycled back into the shearing process repeatedly through continuous rotation of the rotor to achieve maximum dispersion. In this sense, rotor stators differ from laboratory or industrial grade 'agitators' or 'mixers' which lack rotating and stationary parts that work cooperatively to promote mixing/disintegration. A rotor stator is preferably used in the process of the invention due to the high shear and mixing forces produced, thereby reducing the reaction time required.

Aspects of the invention relate to a method of making an asphalt mixture composition, the method comprising: (1) heating the asphalt composition to a temperature in the range of 110 to 190° C. to obtain a first input stream; (2) providing one or more thermosetting reactive compounds to obtain a second input stream; and (3) homogenizing the streams (1) and (2) in at least a first tank equipped with a rotor stator.

Preferably, the homogenization in (3) is carried out with a mixing power of less than 200 W/kg. More preferably, the homogenization in (3) is carried out with a mixing power of less than 150 W/kg, or less than 130 W/kg, or more preferably less than 110 W/kg.

According to the invention, the asphalt composition of (1) is heated to a temperature in the range of 110 to 190° C. to obtain a first input stream. Preferably, the asphalt composition of (1) is heated to a temperature in the range of 120 to 190°C, or 130 to 190°C, or 150 to 190°C, or 175 to 190°C, more preferably 180 to 185°C. Suitable asphalt compositions are described below.

According to the invention, at least one thermosetting reactive compound is provided to obtain the second input stream of (2). Suitable thermosetting reactive compounds are described below.

Optionally, the heater or heating device is arranged to heat the asphalt before it enters the first input stream and/or is arranged to heat the first input stream. Preferably, the first input stream is heated continuously or intermittently.

According to the invention, the homogenization of streams (1) and (2) takes place in at least a first tank equipped with a rotor stator. Preferably, the homogenization of streams (1) and (2) occurs exclusively in the first tank or in one or more additional tanks combined with the first tank. The one or more tanks are located upstream of and in fluid communication with the first tank.

In one preferred embodiment of the invention, the homogenization of streams (1) and (2) takes place exclusively in the first tank.

In an alternative embodiment, molten asphalt or one or more thermosetting reactive compounds are already present in the first tank and only one stream is provided for the other reactants. In a preferred embodiment, the first tank equipped with the rotor stator specified herein contains molten asphalt and an input stream is provided for introducing one or more thermosetting reactive compounds.

In another preferred embodiment of the invention, the homogenization of streams (1) and (2) takes place in one or more additional tanks in combination with the first tank. More preferably, the homogenization of the streams (1) and (2) takes place in a second tank located upstream of the first tank and equipped with an impeller or rotor stator in fluid communication with the first tank.

Preferably the homogenization in (3) is performed at a speed ranging from 3000 to 8900 rpm, or 4000 to 8500 rpm. More preferably, the homogenization in (3) is performed at a speed ranging from 4000 to 8000 rpm.

Preferably the homogenization in (3) is carried out for a period ranging from 0.1 to 6 hours. More preferably, the homogenization of (3) is performed for a period ranging from 0.5 to 5.8, or 1 to 5.5 hours. Even more preferably, the homogenization of (3) is performed for a period ranging from 1.5 to 5.2 hours, or 1.5 to 5.1 hours, or 1.5 to 5 hours, or 1.5 to 4.8 hours. Even more preferably, the homogenization of (3) is carried out for a period ranging from 0.1 to 4.5 hours.

Preferably, the homogenization in (3) is carried out at a temperature ranging from 110 to 190° C. to obtain the first input stream. Preferably, the homogenization in (3) is carried out at a temperature ranging from 120 to 190°C, or 130 to 190°C, or 150 to 190°C, or 175 to 190°C, more preferably 180 to 185°C.

Preferably, the discharge stream recovered from the bottom of the first tank is directed to a transport tanker or truck. Optionally, the recycle stream is connected to the first tank or the second tank, where the recycle stream is in fluid communication with the discharge stream obtained from the bottom of the first tank. Recirculation allows the asphalt mix composition to pass through the loop and mix freely within the tank, allowing for further mixing. Preferably, the recycle stream is fed to the first tank independently of the first and second input streams. The percentage of recycle stream velocity is in the range of 10% or less of the input stream velocity.

Preferably, the pump is appropriately positioned to ensure a steady stream through the plant. Preferably, the pump may be provided with suitable control devices to ensure controller flow. Preferably, stream controllers, such as mass stream controllers, may be provided at appropriate points to control the velocities of the input and output streams. At this time, the pump speed is set according to operating requirements.

Preferably, the second tank is operated at a higher mixing power than the first tank. More preferably, the second tank operates at 1.2 to 10 times the mixing power of the first tank. More preferably, the second tank operates at 1.5 to 8.5 times, 1.5 to 6 times, 1.5 to 5 times, 1.5 to 4.5 times, or 2 to 4 times the mixing power of the first tank.

The first tank can function as a holding tank or a mixing tank based on the mixing force applied. Preferably, the first tank functions as a holding tank when the second tank is a mixing tank. Preferably, the mixing power is varied based on demand.

Preferably, the second tank has a larger volume, preferably 2 to 50 times the capacity of the first tank. More preferably, the second tank operates at 5 to 40 times, 10 to 35 times, or 15 to 30 times the capacity of the first tank.

The first and second input streams are homogenized in the first tank and/or the second tank. Preferably, the first and second input streams are homogenized simultaneously in one or more additional tanks before being introduced into the first tank. More preferably, the first and second input streams are homogenized simultaneously in the second tank before being introduced into the first tank. Alternatively, the first and second input streams are homogenized simultaneously only in the first tank.

The first and second input streams may be fed simultaneously or sequentially to the first or second tank.

Preferably, a bypass stream is provided for introducing the first and second streams directly into the first tank. The rate of bypass stream velocity is in the range of less than 10% of the input stream velocity.

Preferably, the first and/or second tank further comprises one or more baffles.

Preferably, the process is carried out as a batch or continuous process. More preferably, the process is carried out as a continuous process. When the process is carried out as a continuous process, preferably a recycle stream is used.

mixer

According to the invention, the streams (1) and (2) are homogenized in at least a first tank equipped with a rotor stator.

Preferably the rotor stator is selected from plain holes, slotted holes or square holes. More preferably a rotor stator is common.

Preferably, the homogenization of the streams (1) and (2) takes place in a second tank located upstream of the first tank and equipped with an impeller or rotor stator in fluid communication with the first tank. More preferably, the second tank is equipped with a rotor stator. A suitable rotor stator for the second tank is as mentioned above.

Alternatively, the second tank is equipped with an impeller. Preferably, the impeller is selected from pitched blade turbine, flat blade turbine, chevron, ribbon, anchor or combinations thereof. More preferably, the first and second impellers are selected from ribbon, anchor, or a combination of pitched and flat blade turbines. More preferably, the first and second impellers are anchors.

Preferably, the first and/or second impeller comprises at least one axial flow blade and at least one radial flow blade. More preferably, the first and/or second impeller is a combination of a pitched blade turbine and a flat blade turbine.

asphalt composition

According to the invention, the asphalt composition used in the process may be any known asphalt and generally comprises any bituminous compounds. This may be any material referred to as bitumen or asphalt, for example distillate, blown, high vacuum and cut-back bitumen, but also for example asphalt concrete, cast asphalt, asphalt mastic, natural asphalt. Or it may be a mixture thereof. For example, direct distilled asphalt with a penetration of 80/100 or 180/200 can be used. In other embodiments, the asphalt may be free of fly ash.

Various physical properties of asphalt are measured by various tests known in the art and are described in detail in the experimental section. For example, in the Multiple Stress Creep Recovery (MSCR) test, where asphalt is subjected to a constant load for a fixed period of time, the elastic response and non-recoverable creep compliance (Jnr) are calculated. The total strain over a certain period of time is given in %, which corresponds to a measure of the elasticity of the binder. Additionally, the phase angle can be measured, indicating improved elastic response (reduced phase angle) of the modified binder.

BBR (Bending Beam Rheometer) is used to measure the stiffness of asphalt at low temperatures and generally refers to the bending stiffness of asphalt. In this test, two parameters are measured. Creep stiffness is a measure of the resistance of bitumen to a constant load, while creep rate (or m-value) is a measure of how asphalt stiffness changes when a load is applied. If the creep stiffness is too high, the asphalt will behave in a brittle manner and will be more likely to crack. High m-values are desirable because stiffness changes relatively quickly as temperature changes and thermal stresses accumulate. A high m-value indicates that the asphalt will tend to dissipate stresses that build up to a level where cold cracking can occur.

Various properties of asphalt can be measured using standard techniques known to those skilled in the art. For example, softening point according to DIN EN1427, rolling thin film oven (RTFO) test according to DIN EN 12607-1, dynamic shear rheometer (DSR) according to DIN EN 14770 - ASTM D7175, multiple according to DIN EN 16659 - ASTM D7405. Stress creep recovery (MSCR) test, and bending beam rheometer according to DIN EN 14771 - ASTM D6648.

Preferably, the asphalt is preferably from 20 to 30, 30 to 45, 35 to 50, 40 to 60, 50 to 70, 70 to 100, 100 to 150, 160 to 220, 250 to 330, or 300 to 400. selected through and/or 52 to 16, 52 to 22, 52 to 28, 52 to 34, 52 to 40, 58 to 16, 58 to 22, 58 to 28, 58 to 34, 58 to 40, 64 to 16, 64 to 22, 64 to 28, 64 to 34, 64 to 40, 67 to 22, 70 to 16, 70 to 22, 70 to 28, 70 to 34, 70 to 40, 76 to 16, 76 to 22, 76 to 28 , and has a performance rating selected from 76 to 34 or 76 to 40. More preferably, the penetration is selected from 70 to 100, 100 to 150, 160 to 220, 250 to 330, or 300 to 400 and/or the performance rating is 52 to 16, 52 to 22, 52 to 28, 52 to 34. , 52 to 40, 58 to 16, 58 to 22, 58 to 28, 58 to 34, 58 to 40, 64 to 16, 64 to 22, 64 to 28, 64 to 34, 67 to 22, 70 to 16, 70 is selected from 22, 70 to 28, 76 to 16, 76 to 22, 76 to 28, 76 to 34 or 76 to 40. Even more preferably the penetration is selected from 100 to 150, 160 to 220, 250 to 330 or 300 to 400 and/or the performance rating is 52 to 16, 52 to 22, 52 to 28, 52 to 34, 52 to 40, selected from 58 to 16, 58 to 22, 58 to 28, 58 to 34, 64 to 16, 64 to 22, 64 to 28, 67 to 22, 70 to 16, 70 to 22, 76 to 16, or 76 to 22 do. Even more preferably the penetration is selected from 100 to 150, 160 to 220, 250 to 330 or 300 to 400 and/or the performance rating is 58 to 28, 58 to 34, 64 to 16, 64 to 22, 64 to 28, selected from 67 to 22, 70 to 16, 70 to 22, 76 to 16 or 76 to 22. Most preferably the asphalt has a performance rating selected from 70 to 16, 70 to 22, 64 to 16, 67 to 22 or 64 to 22. AASHTO - M320 describes standard specifications for performance grades of asphalt and AASHTO - M20 describes penetration grades.

Typically, asphalt from different suppliers has different compositions depending on where the crude oil comes from and the refinery's distillation process. However, the cumulative total amount of reactive groups is preferably in the range of 3.1 to 4.5 mgKOH/g. For example, an asphalt with a penetration index of 50 to 70 or 70 to 100 would result in a stoichiometric amount of pMDI of 0.8 to 1.2 wt.%. Due to the susceptibility of asphalt to oxidation at elevated temperatures during preparation of asphalt compositions, additional excess isocyanate will be used to react with the newly formed functional groups.

Thermosetting reactive compounds

According to the invention, at least one thermosetting reactive compound is provided to obtain the second input stream of (2).

Preferably, the thermosetting reactive compound comprises one or more compounds selected from isocyanates, epoxy resins, melamine formaldehyde resins and mixtures of two or more of these.

Preferably, the total amount of thermosetting reactive compounds in the composition is 0.1 to 10.0% by weight based on the total weight of the composition.

In general, by modifying asphalt with thermosetting reactive compounds, performance can be improved in various aspects of physical properties, for example, increased elastic response can be obtained.

Without wishing to be bound by theory, it is believed that thermosetting reactive compounds chemically react with various molecular species in the asphalt composition to produce specific types of colloidal structures. In the asphalt mixture composition thus obtained, the physical properties of the asphalt remain more constant over a wide temperature range and/or are even improved over the temperature range to which the asphalt mixture composition is applied.

Preferably, the thermosetting reactive compound is an isocyanate. In general, the isocyanate(s) may exist in monomeric form, polymeric form, or a mixture of monomeric and polymeric forms. The term “polymer” refers to a polymer class of aliphatic, aromatic isocyanates, or mixtures thereof containing dimers, trimers, higher homologs, and/or oligomers.

Preferably the amount of isocyanate is 1 to 100% by weight of the thermosetting reactive compound present in the asphalt mixture composition of the present invention. More preferably, the amount of isocyanate is 10 to 100% by weight of the thermosetting reactive compound present in the asphalt mixture composition. Even more preferably, the isocyanate is in an amount of 30 to 100% by weight of the thermosetting reactive compound present in the asphalt mix composition.

Preferably the isocyanate(s) have a functionality of at least 2.0, at least 2.3, at least 2.5, or at least 2.7. More preferably, the isocyanate(s) have a functionality ranging from 2.3 to 4.5, 2.5 to 4.3, or 2.5 to 4.0.

Preferably the isocyanate(s) are selected from modified and/or unmodified isocyanates.

The unmodified isocyanate is preferably selected from aromatic and/or aliphatic unmodified isocyanates.

Preferably the isocyanate is a modified or unmodified aromatic isocyanate. Aromatic isocyanates include those in which two or more isocyanate groups are attached directly and/or indirectly to an aromatic ring. Aromatic isocyanates may be monomers, polymers, or mixtures of monomer and polymer forms.

Preferred unmodified aromatic isocyanates include methylene diphenyl diisocyanate (MDI), polymeric MDI, toluene diisocyanate, polymeric toluene diisocyanate, m-phenylene diisocyanate; 1,5-naphthalene diisocyanate; 1,3-phenylene diisocyanate; 2,4,6-toluylene triisocyanate, 1,3-diisopropylphenylene-2,4-diisocyanate; 1-methyl-3,5-diethylphenylene-2,4-diisocyanate; 1,3,5-triethylphenylene-2,4-diisocyanate; 1,3,5-triisopropyl-phenylene-2,4-diisocyanate; 3,3'-diethyl-bisphenyl-4,4'-diisocyanate; 3,5,3',5'-tetraethyl-diphenylmethane-4,4'-diisocyanate; 3,5,3',5'-tetraisopropyldiphenylmethane-4,4'-diisocyanate; 1-ethyl-4-ethoxy-phenyl-2,5-diisocyanate; 1,3,5-triethylbenzene-2,4,6-triisocyanate; 1-ethyl-3,5-diisopropyl benzene-2,4,6-triisocyanate, tolidine diisocyanate, and 1,3,5-triisopropyl benzene-2,4,6-triisocyanate, or the above It is a combination of two or more of those mentioned. In one embodiment, monomer mixtures (including isomers thereof) and/or polymer grades of the above-mentioned aromatic isocyanates may also be used as thermosetting reactive compounds.

More preferred unmodified aromatic isocyanates are methylene diphenyl diisocyanate (MDI), polymeric MDI, toluene diisocyanate, polymeric toluene diisocyanate, m-phenylene diisocyanate; 1,5-naphthalene diisocyanate; 1,3-phenylene diisocyanate; 2,4,6-toluylene triisocyanate, 1,3-diisopropylphenylene-2,4-diisocyanate; 1-methyl-3,5-diethylphenylene-2,4-diisocyanate; 1,3,5-triethylphenylene-2,4-diisocyanate; 1,3,5-triisopropyl-phenylene-2,4-diisocyanate; 3,3'-diethyl-bisphenyl-4,4'-diisocyanate; and 3,5,3',5'-tetraethyl-diphenylmethane-4,4'-diisocyanate, or a combination of two or more of those mentioned above.

Even more preferred unmodified aromatic isocyanates include methylene diphenyl diisocyanate (monomeric MDI), polymeric MDI, toluene diisocyanate, polymeric toluene diisocyanate, m-phenylene diisocyanate; 1,5-naphthalene diisocyanate; 1,3-phenylene diisocyanate; and 2,4,6-toluylene triisocyanate, or a combination of two or more of those mentioned above.

Even more preferred unmodified aromatic isocyanates are monomeric MDI, polymeric MDI, toluene diisocyanate, polymeric toluene diisocyanate, and 1,5-naphthalene diisocyanate, or combinations of two or more of those mentioned above.

Even more preferred unmodified aromatic isocyanates are monomeric MDI and/or polymeric MDI. The monomeric MDI may preferably be selected from 4,4'-MDI, 2,2'-MDI and 2,4'-MDI, or a combination of two or more of those mentioned above.

In a preferred embodiment, the unmodified aromatic isocyanate(s) is polymeric MDI. Preferably, the polymeric MDI may comprise various amounts of isomers, such as 4,4'-, 2,2'- and 2,4'-MDI. The amount of the 4,4'-MDI isomer is from 26% to 98%, alternatively from 30% to 95%, alternatively from 35% to 92% by weight relative to the isomer. More preferably, the two ring content of the polymeric MDI is 20% to 62%, or 26% to 48%, or 26% to 42% relative to the isomer.

In general, the purity of polymeric MDI or pMDI is not limited to any value. Preferably, the pMDI used in accordance with the present invention has an iron content of 1 to 100 ppm, 1 to 70 ppm, 1 to 80 ppm, or 1 to 60 ppm, based on the total amount of polymeric MDI.

In a preferred embodiment, the pMDI used according to the invention has an NCO content ranging from 22 to 40%, 25 to 37%, 28 to 35%, or 30 to 33% by weight, based on the total weight of the pMDI. .

In another preferred embodiment, the pMDI is 0.1 to 10% by weight, or 0.1 to 9.5% by weight, or 0.1 to 9.0% by weight, or 0.1 to 8.5% by weight, based on the total weight of the asphalt mixture composition. , or 0.1% to 8.0% by weight, or 0.1% to 7.5% by weight, or 0.1% to 7.0% by weight.

Preferably, the pMDI has a functionality of at least 2.3, at least 2.5, or at least 2.7. More preferably, the pMDI has a functionality ranging from 2.3 to 4.5, or from 2.5 to 4.3, or from 2.5 to 4.0.

Preferably the isocyanate is a modified or unmodified aliphatic isocyanate. Aliphatic isocyanates may be monomers, polymers, or mixtures of monomer and polymer forms.

Preferred unmodified aliphatic isocyanates are cyclobutane-1,3-diisocyanate, 1,2-, 1,3- or 1,4-cyclohexane diisocyanate, 2,4- or 2,6 methylcyclohexane diisocyanate, 4 ,4'- or 2,4'-dicyclohexyl diisocyanate, 1,3,5-cyclohexane triisocyanate, isocyanatomethylcyclohexane isocyanate, isocyanatoethylcyclohexane isocyanate, bis(isocyanate) Itomethyl)cyclohexane diisocyanate, 4,4'- or 2,4'-bis(isocyanato-methyl)dicyclohexane, isophorone diisocyanate (IPDI), diisocyanatodicyclohexylmethane (H12MDI) , tetramethylene 1,4-diisocyanate, pentamethylene 1,5-diisocyanate, hexamethylene 1,6-diisocyanate (HDI), decamethylene diisocyanate, 1,12-dodecane diisocyanate, 2,2,4 -trimethyl-hexamethylene diisocyanate, 2,4,4-trimethyl-hexamethylene diisocyanate, 2-methyl-1,5-pentamethylene diisocyanate, or a combination of two or more of the above mentioned.

More preferred unmodified aliphatic isocyanates are 2,4- or 2,6 methylcyclohexane diisocyanate, 4,4'- or 2,4'-dicyclohexyldiisocyanate, 1,3,5-cyclohexane triisocyanate, isocyanate Cyanatomethylcyclohexane isocyanate, isocyanatoethylcyclohexane isocyanate, bis(isocyanatomethyl)cyclohexane diisocyanate, 4,4'- or 2,4'-bis(isocyanato-methyl) Dicyclohexane, isophorone diisocyanate (IPDI), diisocyanatodicyclohexylmethane (H12MDI), tetramethylene 1,4-diisocyanate, pentamethylene 1,5-diisocyanate, hexamethylene 1,6-diisocyanate ( HDI), decamethylene diisocyanate, 1,12-dodecane diisocyanate, 2,2,4-trimethyl-hexamethylene diisocyanate, or a combination of two or more of the above-mentioned.

Even more preferred unmodified aliphatic isocyanates include 4,4'- or 2,4'-bis(isocyanato-methyl)dicyclohexane, isophorone diisocyanate (IPDI), and diisocyanatodicyclohexylmethane (H12MDI). , tetramethylene 1,4-diisocyanate, pentamethylene 1,5-diisocyanate, hexamethylene 1,6-diisocyanate (HDI), decamethylene diisocyanate, 1,12-dodecane diisocyanate and 2,2,4 -Trimethyl-hexamethylene diisocyanate. Even more preferably, the aliphatic isocyanate is from isophorone diisocyanate (IPDI), diisocyanatodicyclohexylmethane (H12MDI), hexamethylene 1,6-diisocyanate (HDI), or a combination of two or more of the above mentioned. is selected.

In a preferred embodiment, the one or more thermosetting reactive compounds are unmodified isocyanates, wherein the total amount of isocyanates is from 1 to 100%, 10 to 99%, or 30 to 99% by weight of the thermosetting reactive compounds present in the asphalt mix composition. is the amount of

In another preferred embodiment, the one or more thermosetting reactive compounds are unmodified aromatic or aliphatic isocyanates, wherein the total amount of isocyanates is 1 to 100%, 10 to 99%, or 30% by weight of the thermosetting reactive compounds present in the asphalt mix composition. The amount is from 99% by weight.

Modified isocyanates, especially modified monomeric MDIs, can be selected from modified prepolymers, urethoimines and carbodiimides as suitable thermosetting reactive compounds.

The modified isocyanates are preferably selected from aromatic and/or aliphatic modified isocyanates.

Preferred modified aromatic isocyanates are carbodiimide modified monomer MDI, uretoimide modified monomer MDI, or combinations thereof.

A more preferred aromatic isocyanate(s) is the carbodiimide modified monomeric MDI.

In a preferred embodiment, the carbodiimide modified monomeric MDI comprises 65% to 85% by weight of 4,4'-MDI and 15% to 35% by weight of carbodiimide, wherein the weight% is Based on total weight of modified monomer MDI.

In another preferred embodiment, the amount of 4,4'-MDI in the carbodiimide modified monomer MDI ranges from 70% to 80% by weight and the amount of carbodiimide ranges from 20% to 30% by weight.

In another preferred embodiment, the polymeric MDI or pMDI may also comprise modified variants containing carbodiimide, uretoimine, isocyanurate, urethane, allophanate, urea or biuret groups. These will all be referred to as pMDI below.

In another preferred embodiment, the monomeric MDI has a functionality of at least 2.0, at least 2.1, at least 2.15, for example at least 2.2, 2.3 or 2.4. More preferably, the monomeric MDI has a functionality ranging from 2.3 to 4.5, 2.5 to 4.3, or 2.5 to 4.0. These will all be referred to as monomeric MDI below.

Preferably the isocyanate is a modified aliphatic isocyanate. Modified aliphatic isocyanates are known in the art. Depending on the application, they can be obtained by well-known methods comprising reacting one or more of the above-mentioned unmodified aliphatic isocyanate(s) with suitable reactive group(s).

A more preferred modified aliphatic isocyanate is biuret-modified HDI.

In a preferred embodiment, the one or more thermosetting reactive compounds are modified isocyanates, wherein the total amount of isocyanates is from 1 to 100%, 10 to 99%, or 30 to 99% by weight of the thermosetting reactive compounds present in the asphalt mix composition. It's a sheep.

In another preferred embodiment, the one or more thermosetting reactive compounds are modified aromatic or aliphatic isocyanates, wherein the total amount of isocyanates is 1 to 100%, 10 to 99%, or 30 to 100% by weight of the thermosetting reactive compounds present in the asphalt mix composition. The amount is 99% by weight.

As mentioned above, thermosetting reactive compounds are primarily isocyanates. However, isocyanates and other thermosetting reactive compounds may optionally be present in the asphalt mix composition. Preferably, the thermosetting reactive compound is selected from epoxy resins and/or melamine formaldehyde resins. In such cases, the minimum total amount of isocyanate in the thermosetting reactive compound is at least 1%, 10%, 20%, 30%, 40%, 50% by weight based on the total weight of thermosetting reactive compound present in the asphalt mixture composition. %, 60% by weight, 70% by weight, 80% by weight, 85% by weight, 88% by weight, 90% by weight, 92% by weight, 94% by weight, 96% by weight, 98% by weight or 99% by weight. In such cases, the maximum total amount of isocyanate in the thermosetting reactive compound may be up to 99.9%, 98%, 97%, 95%, 92%, 90% by weight, based on the total weight of thermosetting reactive compound present in the asphalt mix composition. %, 85% by weight, 80% by weight, or 70% by weight. Preferably, the total amount of isocyanates in the thermosetting reactive compounds ranges from 1 to 99.9 weight percent, 10 to 99 weight percent, or 30 to 99 weight percent based on the total weight of thermosetting reactive compounds present in the asphalt mix composition.

Suitable epoxy resins are known in the art, and the chemical properties of the epoxy resin used according to the invention are not particularly limited. In a preferred embodiment, the epoxy resin is bisphenol A bisglycidyl ether (DGEBA), bisphenol F bisglycidyl ether, ring hydrogenated bisphenol A bisglycidyl ether, ring hydrogenated bisphenol F bisglycidyl ether, bisphenol S bis. Glycidyl ether (DGEBS), tetraglycidylmethylenedianiline (TGMDA), epoxy novolac (reaction product from epichlorohydrin and phenolic resin (novolac)), 3,4-epoxycyclohexylmethyl 3, It is one or more aromatic epoxy resins and/or cycloaliphatic epoxy resins selected from cycloaliphatic epoxy resins such as 4-epoxycyclohexanecarboxylate and diglycidyl hexahydrophthalate. Preferably, the epoxy resin may be selected from bisphenol A bisglycidyl ether and/or bisphenol F bisglycidyl ether and mixtures of these two epoxy resins.

Suitable melamine formaldehyde resins are known in the art and are mainly condensation products of melamine and formaldehyde. Depending on the desired use, it can be modified through reaction with a polyhydric alcohol, etc. The chemical properties of the melamine formaldehyde resin used according to the invention are not particularly limited. In a preferred embodiment, the melamine formaldehyde resin is an aqueous polymer with melamine and formaldehyde present in the resin in a molar ratio ranging from 1:3 to 1:1, or 1:1.3 to 1:2.0, or 1:1.5 to 1:1.7. It relates to an aqueous melamine resin mixture having a resin content ranging from 50% to 70% by weight based on the melamine resin mixture.

The melamine formaldehyde resin may contain a polyhydric alcohol, such as a C ₂ to C ₁₂ diol, in an amount of 1.0% to 10.0% by weight, or 3.0% to 6.0% by weight. Suitable C ₂ to C ₁₂ diols may be selected from diethylene glycol, propylene glycol, butylene glycol, pentane diol and/or hexane diol.

As a further additive, the melamine formaldehyde resin has an average molecular weight of 200 g/mol to 1500 g/mol, comprising 0 to 8.0% by weight of caprolactam and 0.5 to 10% by weight of 2, respectively, based on the aqueous melamine resin mixture. -(2-phenoxyethoxy)-ethanol and/or polyethylene glycol.

Preferably, the thermosetting reactive compound is present in an amount of 0.1 to 10.0% by weight based on the total weight of the asphalt mixture composition. A total amount of 0.1 to 10.0% by weight of the thermoset reactive compound is present, based on the total weight of the composition, and the at least one thermoset reactive compound being an isocyanate surprisingly reduces the adhesion of the asphalt mix composition to the standards for roofing applications specified in ASTM D312. guarantees.

More preferably, the thermosetting reactive compound is present in an amount of 0.1% to 9.5%, or 0.1% to 9.0%, or 0.1% to 8.5%, or 0.1% to 8.0%, or 0.1% to 7.5%, by weight. % by weight, or from 0.1% to 7.0% by weight. In other embodiments, the thermosetting reactive compound is present in an amount of 0.1% to 6.5%, or 0.1% to 6.0%, or 0.1% to 5.0%, or 0.1% to 5.5%, or 0.1% to 4.5%, by weight. % by weight, or 0.1 % to 4.0 % by weight, or 0.1 % to 3.5 % by weight. In another embodiment, it is 0.1% to 3.0% by weight, or 0.5% to 5.0% by weight, or 0.5% to 3.0% by weight, or 1.0% to 5.0% by weight, or 1.0% to 4.5% by weight. , or 1.0% to 4.0% by weight, or 1.5% to 4.0% by weight, or 1.0% to 3.0% by weight.

In a preferred embodiment, the asphalt composition of (1) may further comprise a polymer. Suitable polymers according to the invention include styrene/butadiene/styrene copolymer (SBS), styrene butadiene rubber (SBR), neoprene, polyethylene, low density polyethylene, oxidized high density polyethylene, polypropylene, oxidized high density polypropylene, maleated. selected from polypropylene, ethylene-butyl-acrylate-glycidyl-methacrylate terpolymer, ethyl vinyl acetate (EVA) and polyphosphoric acid (PPA).

Styrene/butadiene/styrene copolymers (SBS) are known in the art. SBS is a thermoplastic elastomer made from two monomers: styrene and butadiene. Therefore, SBS exhibits the properties of both plastic and rubber. Due to these properties, it is widely used in various fields such as asphalt modifiers and adhesives. SBS-copolymers are based on block copolymers with a rubber central block and two polystyrene end blocks, also called triblock copolymers A-B-A. SBS elastomers combine the properties of thermoplastic resins and butadiene rubber. The hard, vitreous styrene block provides mechanical strength and improves wear resistance, while the rubber mid-block provides flexibility and toughness. SBS rubber is often blended with other polymers to improve performance. Often oils and fillers are added to lower cost or further modify properties. Various properties of these thermoplastic resins can be obtained by selecting A and B from various molecular weights.

Any known SBS-copolymer can be used, provided that it is compatible with the asphalt composition of (1). Suitable SBS-copolymers are not limited in structure and can be branched or linear. Suitable SBS-copolymers are not particularly limited in their styrene content. In one embodiment, the styrene/butadiene/styrene (SBS) copolymer is present in an amount of 10% to 50% by weight based on the total weight of the polymer, or 15% to 45% by weight, or 20% by weight based on the total weight of the polymer. % to 42% by weight, or 22% by weight, or 23% by weight, or 26% by weight, or 28% by weight, or 30% by weight, or 32% by weight, or 34% by weight, or 36% by weight, or 38% by weight , or has a styrene content of 39% by weight. The term “styrene content” refers to the amount of styrene polymerized into the SBS polymer.

Preferably, the weight average molecular weight (Mw) of the SBS-copolymer is 10,000 g/mol to 1,000,000 g/mol, or 30,000 g/mol to 300,000 g/mol, or 70,000 g/mol, as determined by gel permeation chromatography (GPC). g/mol to 300,000 g/mol, or 75,000 g/mol to 210,000 g/mol.

Suitable styrene-butadiene or styrene-butadiene rubbers (SBR) are known in the art and are described as a series of synthetic rubbers derived from styrene and butadiene. The styrene/butadiene ratio affects the properties of the polymer. A higher styrene content makes the rubber harder and less rubbery. In general, any known SBR-copolymer can be used, provided that it is compatible with the asphalt composition of (1). Suitable SBR-copolymers are not limited in structure and can be branched or linear. Suitable SBR-copolymers are not particularly limited in their styrene content. In one embodiment, the SBR copolymer is 10% to 50% by weight based on the total weight of the polymer, or 15% to 45% by weight, or 20% to 42% by weight based on the total weight of the polymer, or 22%, or 23%, or 26%, or 28%, or 30%, or 32%, or 34%, or 36%, or 38%, or 39% styrene, by weight It has content.

Preferably, the weight average molecular weight (Mw) of the SBR-copolymer is 10,000 g/mol to 500,000 g/mol, or 50,000 g/mol to 250,000 g/mol, or 70,000 g/mol, as determined by gel permeation chromatography (GPC). g/mol to 150,000 g/mol, or 75,000 g/mol to 135,000 g/mol.

Neoprene is generally known in the art and is a general term for polymers synthesized from chloroprene. It is often supplied in latex form. It may be a colloidal dispersion of chloroprene polymer prepared by emulsion polymerization. The neoprene structure is very regular, but the crystallization tendency can be controlled by changing the polymerization temperature. The final polymer consists of a linear sequence of trans-3-chloro-2-butylene units derived from the trans 1,4 addition polymerization of chloroprene.

Any known neoprene can be used, provided it is compatible with asphalt. In one embodiment, neoprene latex is used. Suitable neoprene latexes have a solids content of 30% to 60% by weight, or 30% to 60%, or 30% to 60% by weight, based on the total weight of the latex.

Suitable polyethylene and polypropylene homopolymers or copolymers and modified polyethylene and polypropylene polymers, such as low-density polyethylene, oxidized high-density polypropylene, maleated polypropylene, are known in the art and are based on the respective monomers. It is described as a polymer/copolymer series. Molecular weight and crystallinity greatly affect the properties of these polymers. Highly structured polyethylene and polypropylene homopolymers or copolymers, and modified polyethylene and polypropylene polymers exhibit high tensile strength but little ability to deform before failure. The less structured the material, the better its ability to stream. For example, like most paraffinic materials, polyethylene is relatively unreactive with most solvents. In addition to molecular weight and crystallinity, density also has a significant impact on the properties of each polymer, since lower densities result in less molecular packing and thus less structure. Low-density polyethylene and high-density polyethylene are generally defined as having specific gravity of about 0.915 to 0.94 and about 0.96, respectively, as measured according to ASTM D792. Additionally, modifiers incorporated as copolymers are used to destroy the crystalline nature of the unmodified polymer (e.g., polyethylene), resulting in a more elastic and amorphous additive. The function of these polymers in asphalt mix compositions is not to form a network but to provide plastic inclusions within the matrix. At low temperatures, these inclusions are intended to directly improve the binder's resistance to thermal cracking by inhibiting crack propagation. At warmer temperatures, particle inclusions should increase the viscosity of the binder, making the mixture more resistant to rutting.

Provided that they are compatible with the asphalt composition of (1), any known polyethylene and polypropylene homopolymers or copolymers, as well as modified polyethylene and polypropylene polymers, can also be used in the asphalt mixture composition. Suitable polymers such as polyethylene, low-density polyethylene, oxidized high-density polyethylene, polypropylene, oxidized high-density polypropylene, maleated polypropylene have no particular molecular weight restrictions. Preferably, each of the polyethylene, low-density polyethylene, oxidized high-density polyethylene, polypropylene, oxidized high-density polypropylene, maleated polypropylene has a weight range of 800 g/mol to 50,000 g/mol as determined by gel permeation chromatography (GPC). , or 1000 g/mol to 45,000 g/mol, or 2000 g/mol to 42,000 g/mol, or 1,000 g/mol to 5,000 g/mol, or 5,000 g/mol to about 10,000 g/mol, or 10,000 g/mol mol to 20,000 g/mol, or 20,000 g/mol to 30,000 g/mol, or 30,000 g/mol to 40,000 g/mol, or 40,000 g/mol to about 50,000 g/mol. . These polymers can be used as plastic polymers in asphalt mixture compositions.

Additionally, suitable polymers such as polyethylene, low-density polyethylene, oxidized high-density polyethylene, polypropylene, oxidized high-density polypropylene, and maleated polypropylene are not particularly limited in their degree of crystallinity. In one embodiment, polyethylene, low density polyethylene, oxidized high density polyethylene, polypropylene, oxidized high density polypropylene, maleated polypropylene each represents greater than 50%, or 52% to 99%, or 52% to 99%, based on the total weight of the described polymer. It has a crystallinity of 55% to 90%. The crystallinity of the polymer is measured by differential scanning calorimetry (DSC), a technique generally known in the art.

Complex polyethylene copolymers are also known in the art, for example, ethylene-butyl-acrylate-glycidyl-methacrylate terpolymers based on three different monomers. This copolymer series is known as a plasticizer resin that improves flexibility and toughness. For example, these copolymers are commercially available from DuPont under the name Elvaloy® terpolymer.

Provided that it is compatible with the asphalt composition of (1), any of the known ethylene-butyl-acrylate-glycidyl-methacrylate terpolymers can be used in the asphalt mixture composition. Suitable polymers, such as ethylene-butyl-acrylate-glycidyl-methacrylate terpolymer, have no particular molecular weight limitations. Preferably, the ethylene-butyl-acrylate-glycidyl-methacrylate terpolymer has a weight range of 800 g/mol to 150,000 g/mol, or 1500 g/mol to 120,000 g/mol, as measured by gel permeation chromatography (GPC). , or has a weight average molecular weight (Mw) of 5000 g/mol to 90,000 g/mol.

Suitable ethylene and vinyl acetate copolymers (EVA) are known in the art and are described in a series of copolymers based on the respective monomers. The inclusion of vinyl acetate is used to help reduce the crystallinity of the ethylene structure and make the plastic polymer more compatible with the asphalt composition of (1). Copolymers with 30% vinyl acetate are classified as flexible resins soluble in toluene and benzene. When the vinyl acetate percentage is increased to 45%, the resulting product is gummy and can be vulcanized.

Any known EVA-copolymer can be used, provided that it is compatible with the asphalt composition of (1). Suitable EVA-copolymers are not limited in structure and can be branched or linear, preferably the EVA-copolymers are linear. Suitable EVA-copolymers are not particularly limited in their vinyl acetate content. Preferably, the EVA copolymer has a vinyl acetate content of 20% to 60% by weight, or 25% to 50%, or 30% to 45% by weight, based on the total weight of the polymer.

In general, polyphosphoric acid (PPA) is known in the art and is a polymer of orthophosphoric acid (H ₃ PO ₄ ) of the general formula (H _{n + 2} P _n O _{3n + 1} ). Polyphosphoric acids are mixtures of orthophosphoric acid, pyrophosphoric acid, triphosphoric acid and higher acids and their properties are often measured on the basis of calculated H ₃ PO ₄ content. Superphosphoric acid is a similar mixture with different contents of H ₃ PO ₄ and can be included in the definition of PPA in the context of the present invention. In general, any known polyphosphoric acid can be used, provided it is compatible with asphalt. Suitable polyphosphoric acids according to the present invention are not limited in their structure and composition of orthophosphoric acid, pyrophosphoric acid, triphosphoric acid and higher acid, and preferably PPA is anhydrous. In one embodiment, the polyphosphoric acid (PPA) has a calculated H ₃ PO ₄ content of 100% to 120%, or 103% to 118%, or 104% to 117%.

Polyphosphoric acid can be used as a further additive in the asphalt composition of (1) in customary amounts, for example, to increase the softening point of the product. Phosphoric acid may be provided in any suitable form, including mixtures of various forms of phosphoric acid. For example, some suitable different forms of phosphoric acid include phosphoric acid, polyphosphoric acid, superphosphoric acid, pyrophosphoric acid, and triphosphoric acid.

Preferably, stream (1) further comprises granular material.

More preferably, the granular material comprises one or more granular materials selected from gravel, recycled asphalt pavement, sand, one or more filler materials and mixtures of two or more of these.

Preferably, the granular material is preheated in the range from 110 to 240° C. before being introduced into the first input stream (1).

Preferably, the weight ratio of the asphalt mixture composition obtained in (3) to granular material ranges from 0.5:99.5 to 25:75.

Additional optional additives known in the art may be added to the asphalt composition (1) according to the invention in order to adjust the properties of the asphalt mixture composition according to the respective application. The additive may be, for example, a wax. These waxes used as additional additives in asphalt binder compositions may be functionalized waxes, synthetic waxes, or naturally occurring waxes. Additionally, waxes can be oxidized or non-oxidized. Non-exclusive examples of synthetic waxes include polyolefin waxes such as ethylene bis-stearamide (EBS), Fischer-Tropsch wax (FT), oxidized Fischer-Tropsch wax (FTO), polyethylene wax (PE), and oxidized polyethylene. Includes wax (OxPE), polypropylene wax, polypropylene/polyethylene wax, alcohol wax, silicone wax, petroleum wax such as microcrystalline wax or paraffin, and other synthetic waxes. Non-exclusive examples of functionalized waxes include amine waxes, amide waxes, ester waxes, carboxylic acid waxes, and microcrystalline waxes. Naturally occurring waxes may be derived from plants, animals, minerals, or other sources. Non-exclusive examples of natural waxes include plant waxes such as candelilla wax, carnauba wax, rice wax, Japan wax, and jojoba oil; Animal waxes such as beeswax, lanolin, and whale wax; Includes mineral waxes such as montan wax, ozokerite, and ceresin. Mixtures of the waxes described above are also suitable; for example, the wax may include a combination of Fischer-Tropsch (FT) wax and polyethylene wax.

Plasticizers may also be used as additional additives in customary amounts to increase the plasticity or flowability of the asphalt mixture composition. Suitable plasticizers include hydrocarbon oils (e.g. paraffinic, aromatic and naphthenic oils), long-chain carbon diesters (e.g. phthalic acid esters such as dioctyl phthalate and adipic acid esters such as dioctyl adipate), Sebacic acid esters, glycols, fatty acids, phosphoric acid and stearic acid esters, epoxy plasticizers (e.g. epoxidized soybean oil), polyether and polyester plasticizers, alkyl monoesters (e.g. butyl oleate), long chain partial ether esters (e.g. , butyl cellosolve oleate), etc.

Antioxidants can be used in customary amounts as additional additives to asphalt binder compositions to prevent oxidative degradation of the polymers that lead to loss of strength and flexibility of these materials.

Typical amounts for optional additives range from 0.1% to 5.0% by weight, based on the total amount of the asphalt composition of (1).

Various parameters are important to ensure suitability for specific applications, such as weathering applications. The properties of asphalt mixture compositions, such as increased useful temperature interval, increased elastic response, good adhesion, increased load rating, and reduced likelihood of permanent asphalt deformation, can vary depending on the concentration of particles with a certain sedimentation coefficient, which corresponds to It is directly related to the particle size of the composition. According to the invention, the asphalt mixture composition has at least 18% by weight based on the total weight of the composition particles having a sedimentation coefficient in white spirit solvent of greater than 5000 Sved.

Preferably, the asphalt mix composition has at least 20% by weight, or at least 23% by weight based on the total weight of the composition particles having a sedimentation coefficient in white spirit solvent of greater than 5000 Sved. Such particles having a sedimentation coefficient greater than 5000 Sved in a white spirit solvent may have less than 99.9% by weight based on the total weight of the composition, or less than 95% by weight, or less than 90% by weight, or less than 90% by weight, based on the total weight of the composition. , or may be less than 80% by weight. For example, 18% to 75% based on the total weight of composition particles having a sedimentation coefficient in a white spirit solvent ranging from 15000 to 170000 Sved, or the total weight of composition particles having a sedimentation coefficient in a white spirit solvent ranging from 25000 to 140000 Sved. 23% to 65% by weight, or 30% to 52% by weight based on the total weight of the composition particles having a sedimentation coefficient in the range of 22000 to 95000 Sved in white spirit solvent.

White spirit solvent in this context means white spirit high boiling petroleum according to CAS-Nr.:64742-82-1, with an aromatic content of 18% and a boiling point of 180° C. to 220° C. Sedimentation coefficient can be detected through ultracentrifugation combined with absorption optics. The precipitation and concentration of each component are measured at a wavelength of 350 nm. Exemplary measurement techniques for measuring particles of asphalt mixture compositions are described below.

Particle determination of asphalt mixture composition is performed through fractionation experiments using analytical ultracentrifugation. Sedimentation velocity runs can be performed using a Beckman Optima XL-I (Beckman Instruments, Palo Alto, USA). An integrated scanning UV/VIS absorbance optical system is used. A wavelength of 350 nm is selected and the sample is measured at a concentration of approximately 0.2 g/l after dilution with white spirit solvent (CAS-Nr.:64742-82-1). To detect soluble and insoluble fractions, the centrifugation speed varies from 1000 rpm to 55000 rpm. The distribution of sedimentation coefficients, defined as the weight fraction of species with sedimentation coefficients between s and s + ds, and the concentration of one sedimentation fraction are determined using standard analysis software (e.g., SEDFIT). The change in the overall radial concentration profile over time is recorded and converted into a sedimentation coefficient g(s) distribution. The sedimentation coefficient is in units of Sved (1Sved = 10 to 13 seconds). The particles of the asphalt mixture composition are measured by quantifying the light absorption of the fast and slow settling fractions at the wavelengths used.

Usage

In another aspect, the invention claimed herein relates to the use of asphalt mixture compositions for pavement applications.

In another aspect, the invention claimed herein relates to the use of asphalt mixture compositions for weathering applications.

Preferably, the weathering application is a roof application.

The asphalt composition of (1) for use in weathering applications is preferably reformulated with known suitable additives, such as fillers, binders, preservatives, pigments, among others, to form a weathering material. The material is preferably selected from:

- Paints and coatings (especially for waterproofing);

- Mastic to fill joints and seal cracks;

- Grout and hot-poured surfaces for covering surfaces of roads, airfields, playgrounds, etc.,

- Asphalt emulsion,

- hot coating for surface treatment as above,

- Surface coating for surface treatment,

- shingle,

- or a combination of two or more of the foregoing.

More preferably the weathering material is shingles for roofing applications. Roof shingles are roof coverings made up of individually overlapping elements. These elements may be flat rectangular shapes arranged upwards from the bottom edge of the roof, with each successive path overlapping the lower joint.

The method according to the invention is illustrated in more detail by the accompanying drawings.

Figure 1 shows a schematic diagram of a plant for carrying out the method of the invention. The plant includes a first tank equipped with a rotor stator.

As shown in Figure 1, the asphalt composition of (1) is heated to a temperature of 185° C., and the molten asphalt is transferred by means of a pump 108 to a first tank 103 equipped with a rotor stator 104. introduced (first inlet stream 102). The asphalt composition of (1) is heated to obtain molten asphalt. The thermosetting reactive compound (or TRC) is also introduced into the tank by means of pump 107 (second input stream 101). The first and second input streams are homogenized in the first tank (103). The discharge stream 106 drawn from the bottom of the first tank is introduced directly into the transport truck by means of a pump 108. A recycle stream (105) is provided for introducing the effluent obtained from the bottom of the first tank into the first tank by means of a pump (109). At this time, the pump speed is set according to operating requirements.

Figure 2 shows a schematic diagram of a plant for carrying out the method of the invention comprising a first tank and a second tank, the first tank being equipped with a rotor stator and the second tank being equipped with a two-stage impeller.

As shown in FIG. 2, the asphalt composition of (1) is heated to a temperature of 185° C. and the molten asphalt is introduced into the second tank 211 equipped with an impeller 212 by means of a pump 208. (First inlet stream 202). The asphalt composition of (1) is heated to obtain molten asphalt. The thermosetting reactive compound is also introduced into the second tank via pump 207 (second input stream 201). The first and second input streams are homogenized in a second tank (211). The first discharge stream 213 drawn from the bottom of the second tank is introduced by means of a pump 215 into the first tank 203 on which the rotor stator 204 is mounted. A bypass stream 214 is provided for directly introducing the first and second streams into the first tank by means of a pump 216. The first tank has 20 times the volumetric capacity of the second tank and operates at one-third the mixing power of the second tank. The discharge stream 206 from the bottom of the first tank is introduced directly into the transport truck by means of a pump 209. A recycle stream 205 is provided for introducing the output obtained from the bottom of the first tank into the second tank by means of a pump 210. At this time, the pump speed is set according to operating requirements.

The invention claimed herein is further explained by the following embodiments and combinations of embodiments arising from the corresponding dependency references and connections:

I. Method for producing an asphalt mixture composition comprising:

(1) Homogenizing molten asphalt and one or more thermosetting reactive compounds in at least a first tank equipped with a rotor stator.

II. The method of any one of the preceding embodiments, wherein the homogenization is carried out at a temperature ranging from 110 to 190°C.

III. The method of any one of the preceding embodiments, comprising a first input stream obtained by heating the asphalt composition to a temperature ranging from 110 to 190°C.

IV. The method of any one of the preceding embodiments, comprising a second input stream comprising at least one thermosetting reactive compound.

V. Method for producing an asphalt mixture composition comprising:

(1) heating the asphalt composition to a temperature ranging from 110 to 190° C. to obtain a first input stream;

(2) providing one or more thermosetting reactive compounds to obtain a second input stream; and

(3) Homogenizing the streams (1) and (2) in at least a first tank equipped with a rotor stator.

VI. The method of any one of the above embodiments, wherein the homogenization of (3) is performed for a period ranging from 0.1 to 10 hours.

VII. The method of any one of the above embodiments, wherein the homogenization of (3) is performed at a speed in the range of 3000 to 9000 rpm.

VIII. The method of any one of the above embodiments, wherein the homogenization of (3) is carried out with a mixing power of less than 200 W/kg.

IX. Any of the above embodiments, wherein the steps of homogenizing the streams of (1) and (2) are performed in a second tank located upstream of the first tank and equipped with an impeller or rotor stator in fluid communication with the first tank. method.

X. The method of any of the preceding embodiments, wherein the first and second input streams are fed simultaneously to the first or second tank.

XI. The method of embodiments IX-X, wherein the second tank is operated at a higher mixing power than the first tank.

XII. Method according to any one of the preceding embodiments, wherein the rotor stator is selected from plain, slotted or square holes.

XIII. The method of any one of the above embodiments, wherein the rotor stator is of the general type.

XIV. The method of embodiments IX to

XV. The method of embodiments IX-XIV, wherein the impeller includes at least one axial flow blade and at least one radial flow blade.

XVI. The method of Examples IX-XV, wherein the impeller is a combination of a pitched blade turbine and a flat blade turbine.

XVII. Method of Embodiments IX to XVI, wherein the impeller is an anchor.

XVIII. The method of any of the preceding embodiments, wherein the first and/or second tanks further comprise one or more baffles.

XIX. The method of any one of the above embodiments, wherein the weight ratio of the total amount of thermosetting reactive compounds to the asphalt composition of (1) ranges from 0.1:99.9 to 25:75.

XX. The method of any one of the preceding embodiments, wherein the total amount of thermosetting reactive compounds in the asphalt mixture composition is 0.1 to 10.0 weight percent based on the total weight of the mixture composition.

XXI. The method of any one of the preceding embodiments, wherein the thermosetting reactive compound comprises one or more compounds selected from isocyanates, epoxy resins, melamine formaldehyde resins, and mixtures of two or more thereof.

XXII. The method of any one of the preceding embodiments, wherein the thermosetting reactive compound comprises one or more compounds selected from aliphatic isocyanates, aromatic isocyanates, or mixtures thereof.

XXIII. Aliphatic isocyanates are 1,12-dodecane diisocyanate, 2-ethyltetramethylene diisocyanate-1,4, 2-methylpentamethylene diisocyanate-1,5, tetramethylene diisocyanate-1,4, and hexamethylene diisocyanate-1. ,6, trimethyl diisocyanate, tetramethyl diisocyanate, pentamethyl diisocyanate, hexamethyl diisocyanate, heptamethyl diisocyanate, octamethyl diisocyanate, 2-methylpentamethylene-1,5-diisocyanate, 2-ethylbutylene The method of embodiment XXII, comprising at least one compound selected from -1,4-diisocyanate, pentamethylene-1,5-diisocyanate, butylene-1,4-diisocyanate and mixtures of two or more thereof.

XXIV. Aliphatic isocyanates are 1-isocyanato-3,3,5-trimethyl-5-iso-cyanatomethyl-cyclohexane (isophorone diisocyanate, IPDI), 1,4-bis(isocyanatomethyl) Cyclohexane and/or 1,3-bis(isocyanatomethyl)cyclohexane (HXDI), 1,4-cyclohexane diisocyanate, 1-methyl-2,4- and/or -2,6-cyclohexane Diisocyanate and 4,4'-dicyclohexylmethane diisocyanate, 2,2'-dicyclohexylmethane diisocyanate, 2,4'-dicyclohexylmethane diisocyanate, cyclohexane-1,3-diisocyanate, cyclohexane-1,3-diisocyanate, Hexane-1,4-diisocyanate, 2,4-hexahydrotoluene diisocyanate, 2,6-hexahydrotoluene diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, 2,2'-dicyclohexylmethane The method of embodiment XXII or XXIII, comprising at least one cycloaliphatic compound selected from diisocyanate, 2,4'-dicyclohexylmethane diisocyanate, and mixtures of two or more thereof.

XXV. Aromatic isocyanate is 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, 2,2'-diphenylmethane diisocyanate isocyanate, 1,5-naphthylene diisocyanate, 3,3'-dimethyl diphenyl diisocyanate, 1,2-diphenylethane diisocyanate, p-phenylene diisocyanate, and mixtures of two or more of these. The method of Embodiment XXII, comprising:

XXVI. The method of any one of the preceding embodiments, wherein the thermosetting reactive compound is a polymeric MDI and the total amount of 4,4'-MDI in the polymeric MDI ranges from 26 to 98 weight percent based on 100 weight percent of the one or more thermosetting reactive compounds.

XXVII. The method of any one of the preceding embodiments, wherein the thermosetting reactive compound has an average isocyanate functionality of 2.1 to 3.5.

XXVIII. The process of any of the preceding embodiments, wherein the stream of (1) further comprises granular material.

XXIX. The process of embodiment XXVIII, wherein the granular material is preheated in the range from 110 to 240° C. before being introduced into the first input stream (1).

XXX. The method of embodiment XXVIII or XXIX, wherein the granular material comprises one or more granular materials selected from gravel, recycled asphalt pavement, sand, one or more filler materials, and mixtures of two or more thereof.

XXXI. The process of embodiments XXVIII to XXXI, wherein the weight ratio of the asphalt mixture composition obtained in (3) to the granular material is in the range from 0.5:99.5 to 25:75.

XXXII. The asphalt composition of (1) is 20 to 30, 30 to 45, 35 to 50, 40 to 60, 50 to 70, 70 to 100, 100 to 150, 160 to 220 and 250 to 330, more preferably 30 to 45. , 35 to 50, 40 to 60, 50 to 70, 70 to 100, 100 to 150 and 160 to 220, more preferably 40 to 60, 50 to 70, 70 to 100 and 100 to 150. and more preferably the asphalt composition of (1) has a needle penetration of 50 to 70 or 70 to 100, wherein the needle penetration is measured according to DIN EN 1426. The method of any one of the embodiments.

XXXIII. The method of any one of the above embodiments, wherein the asphalt composition of (1) comprises bitumen modified with one or more compounds selected from thermoplastic elastomers, latex, thermoplastic polymers, thermoset polymers, and mixtures of two or more thereof.

XXXIV. Thermoplastic elastomers include styrene butadiene styrene (SBE), styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), styrene isoprene styrene (SIS), styrene ethylene butadiene styrene (SEBS), ethylene propylene diene terpolymer (EPDT), and isopropyl elastomers. The method of embodiment XXXIII, wherein the method is selected from ten isoprene copolymers (IIR), polyisobutene (PIB), polybutadiene (PBD), polyisoprene (PI), and mixtures of two or more thereof.

XXXV. The method of any one of the preceding embodiments, wherein the asphalt composition of (1) comprises one or more additives.

XXXVI. An asphalt mixture composition obtained or obtainable according to the method of any one of embodiments I to XXXV.

XXXVII. Use of the asphalt mixture composition according to embodiment XXXVI for paving applications.

XXXVIII. Use of the asphalt mixture composition according to embodiment XXXVI for weathering applications.

Example

The invention claimed herein is illustrated by the following non-limiting examples:

raw material

Asphalt (SA) SA Asphalt with performance classes 70/100 and 30/45 according to AASHTO - M320 Thermosetting reactive compounds (TRC) TRC Polymeric MDI with functionality of 2.7 and NCO content ranging from 30% to 33% by weight obtained from BASF

Reaction time analysis

The asphalt composition (first input stream) is mixed with 2% by weight thermosetting reactive compound (second input stream) and run to the temperature defined in Table 1 below. It was confirmed that at higher temperatures (above 190°C), unwanted odors are generated and VOCs are produced. All laboratory experiments were completed in a batch Parr reactor (tank 1) equipped with the appropriate mixers listed in Table 2 below. Operating conditions such as mixing power are summarized in Table 2 below. NCO concentration was checked regularly, and the end point was confirmed when NCO was less than 0.1%. It was shown that the incorporation of baffles improved radial mixing. The experimental results for various mixers are shown in Table 2 below.

mixer diameter Temperature (℃) baffler RPM Power number (experiment) Mixing power (W/kg) reaction time (hours) PBT 2.248 148.9 no 660 1.96 2.88 19 PBT 2.248 176.7 no 660 1.96 2.88 12 PBT+PBT 2.248/ 2.0 148.9 no 660 -- 1.14 13 PBT+PBT 2.248 185 yes 450 -- 1.45 7 PBT+PBT 2.248 185 yes 700 2.07 4.63 3.5 FBT 1.969 176.7 no 660 -- 1.59 8 PBT+FBT 2.248/ 2.4285 176.7 no 500 1.48 1.49 4 ribbon 2.372 148.9 no 660 -- 19.7 7 ribbon 2.372 176.7 no 400 -- 4.4 4.5 ribbon 2.372 176.7 no 1000 -- 68 <1 ribbon 2.372 176.7 yes 350 16.9 2.9 3 ribbon 2.372 176.7 no 1000→300 -- 68→1.9 4.3 2nd hole 2.5 176.7 no 660 -- -- 11 Rotor Stator - Square Hole 1.3125 176.7 no 4000 -- 23.0 4.5 Rotor Stator - Square Hole 1.3125 176.7 no 8000 -- 183.7 4.5 Rotor stator general type 1.3125 185 no 6000 -- 77.5 2.5 Buta Blade 2.89 176.7 no 600 1.13 4.01 4 PBT+ Butablade 2.248/ 2.89 176.7 no 450 0.85 1.89 4 Chevron (top) + PBT 2.248 185 yes 450 1.49 0.64 6 Chevron (lower) + PBT 2.248 185 yes 600 -- -- 6 anchor 2.298 185 yes 350 3.79 0.85 4.5 anchor 2.298 185 no 1000→300 3.79 19.80→0.53 4

Note - All experiments were performed with 600 g, except for the rotor stator (400 g); Laboratory power number in the laminar flow regime (Reynolds number, R _e : approximately 100).

Reaction time is affected by various factors such as mixing power, temperature, and rpm. Increasing one or more of these factors has been shown to shorten reaction times. Because high shear rates and overall mixing in the reactor are critical to the reaction rate, mixing power appears to have a much greater effect on the reaction rate than temperature. However, in an effort to minimize power consumption (mixing power less than 4 W/kg), it has surprisingly been found that, by careful selection of the mixer, shorter reaction times can be achieved (less than 6 hours). From Table 2 above, it is shown that the ribbon impeller provides acceptable mixing and reaction times due to minimal power consumption, i.e. overall mixing movement in the reactor at low mixing forces. For example, at a mixing power of 3 W/kg, the reaction time was 3 hours. However, ribbon impellers have been shown to present problems such as incompatibility with viscous liquids such as asphalt. The anchor impeller also showed promising results, using which the reaction could be completed in 4.5 hours at a relatively low mixing power of 0.85 W/kg. Additionally, it is designed for viscous solutions. Additionally, in-line mixers have been found to be incompatible with high viscosity liquids such as asphalt. Additionally, in some cases the mixing power fluctuated after 10 minutes as indicated by the arrows in Table 2. For example, 68→1.9 means 68 W/kg power followed by a 10-minute regime of 1.9 W/kg. The staged mixing regime provides exemplary support for the multiple tank system described above, where the second tank is a lower capacity, higher power (second) tank upstream of the larger (first) tank.

Another alternative is to have a multiple impeller system, such as a two-stage impeller. Multi-stage PBT can provide more circulation and energy dissipation than single-stage PBT. Two PBTs provide a reaction time of 7 hours with a mixing power of 1.5 W/kg. However, when replacing the bottom impeller with an FBT, the shear rate was surprisingly improved, improving overall circulation. As a result, the reaction time was found to be shorter (4 hours) at the same mixing power (1.5 W/kg). Additionally, using PBT/FBT, the reaction was completed at a low temperature of 176.7°C without a baffle. Additionally, both dual PBT and PBT/FBT represent economically feasible options for large-scale implementation. The above-mentioned impellers, including two-stage impellers, are particularly suitable for second tanks when used in combination with a first tank equipped with a rotor stator.

Among all mixers, rotary stator mixers have been shown to allow for high intensity and high shear mixing. The experiment was completed using a square hole work head with the highest shear force but lowest flow rate. As a result, the rotor stator provided only localized movement of the liquid. Even at high mixing speeds (4000 to 8000 rpm), there was no difference in reaction time and reaction performance was not as good as that of the ribbon impeller. Surprisingly, a universal work head (low shear but high flow rate) improved the mixing time to 2.5 hours.

Claims (34)

(1) heating the asphalt composition to a temperature ranging from 110 to 190° C. to obtain a first input stream;
(2) providing one or more thermosetting reactive compounds to obtain a second input stream; and
(3) homogenizing the streams of (1) and (2) in at least a first tank equipped with a rotor stator.
A method for producing an asphalt mix composition comprising. According to paragraph 1,
A manufacturing method, wherein the homogenization of (3) is performed for a period ranging from 0.1 to 10 hours. According to claim 1 or 2,
A manufacturing method, wherein the homogenization of (3) is carried out at a speed ranging from 3000 to 9000 rpm. According to any one of claims 1 to 3,
A manufacturing method, wherein the homogenization of (3) is carried out with a mixing power of less than 200 W/kg. According to any one of claims 1 to 4,
A method of manufacturing, wherein the steps of homogenizing the streams of (1) and (2) are performed in a second tank located upstream of the first tank and equipped with a second impeller in fluid communication with the first tank. According to any one of claims 1 to 5,
A method of manufacturing, wherein the first and second input streams are fed simultaneously to the first or second tank. According to clause 4,
A method of manufacturing, wherein the second tank is operated at a higher mixing power than the first tank. According to any one of claims 1 to 7,
A method of manufacturing wherein the rotor stator is selected from plain, slotted or square holes. According to any one of claims 1 to 8,
A manufacturing method in which the rotor stator is of a general type. According to any one of claims 5 to 9,
A method of manufacturing, wherein the impeller is selected independently of one another from a pitched blade turbine, flat blade turbine, chevron, ribbon, anchor, or combinations thereof. According to any one of claims 5 to 10,
A method of manufacturing, wherein the impeller includes one or more axial flow blades and one or more radial flow blades. According to any one of claims 5 to 11,
A manufacturing method wherein the impeller is a combination of a pitched blade turbine and a flat blade turbine. According to any one of claims 5 to 12,
Manufacturing method wherein the impeller is an anchor. According to any one of claims 1 to 13,
A method of manufacturing, wherein the first and/or second tanks further comprise one or more baffles. According to any one of claims 1 to 14,
A method of manufacturing, wherein the weight ratio of the total amount of the thermosetting reactive compound of (2) to the asphalt composition of (1) ranges from 0.1:99.9 to 25:75. According to any one of claims 1 to 15,
A method of manufacturing, wherein the total amount of thermosetting reactive compounds in the asphalt mixture composition is 0.1 to 10.0% by weight based on the total weight of the mixture composition. According to any one of claims 1 to 16,
A method of manufacturing, wherein the thermosetting reactive compound comprises one or more compounds selected from isocyanates, epoxy resins, melamine formaldehyde resins, and mixtures of two or more thereof. According to any one of claims 1 to 17,
A method of manufacturing, wherein the thermosetting reactive compound comprises one or more compounds selected from aliphatic isocyanates, aromatic isocyanates, and mixtures thereof. According to clause 18,
Aliphatic isocyanates are 1,12-dodecane diisocyanate, 2-ethyltetramethylene diisocyanate-1,4, 2-methylpentamethylene diisocyanate-1,5, tetramethylene diisocyanate-1,4, and hexamethylene diisocyanate-1. ,6, trimethyl diisocyanate, tetramethyl diisocyanate, pentamethyl diisocyanate, hexamethyl diisocyanate, heptamethyl diisocyanate, octamethyl diisocyanate, 2-methylpentamethylene-1,5-diisocyanate, 2-ethylbutylene -1,4-diisocyanate, pentamethylene-1,5-diisocyanate, butylene-1,4-diisocyanate, and mixtures of two or more thereof. According to claim 18 or 19,
Aliphatic isocyanates are 1-isocyanato-3,3,5-trimethyl-5-iso-cyanatomethyl-cyclohexane (isophorone diisocyanate, IPDI), 1,4-trimethyl-5-isocyanato Methyl-cyclohexane, bis(isocyanatomethyl)cyclohexane and/or 1,3-bis(isocyanatomethyl)cyclohexane (HXDI), 1,4-cyclohexane diisocyanate, 1-methyl-2 ,4- and/or -2,6-cyclohexane diisocyanate and 4,4'-dicyclohexylmethane diisocyanate, 2,2'-dicyclohexylmethane diisocyanate, 2,4'-dicyclohexylmethane diisocyanate Isocyanate, cyclohexane-1,3-diisocyanate, cyclohexane-1,4-diisocyanate, 2,4-hexahydrotoluene diisocyanate, 2,6-hexahydrotoluene diisocyanate, 4,4'-dicyclohexyl A production method comprising one or more alicyclic compounds selected from methane diisocyanate, 2,2'-dicyclohexylmethane diisocyanate, 2,4'-dicyclohexylmethane diisocyanate, and mixtures of two or more thereof. According to clause 18,
Aromatic isocyanate is 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, 2,2'-diphenylmethane diisocyanate isocyanate, 1,5-naphthylene diisocyanate, 3,3'-dimethyl diphenyl diisocyanate, 1,2-diphenylethane diisocyanate, p-phenylene diisocyanate, and mixtures of two or more of these. Including, manufacturing method. According to any one of claims 1 to 21,
A method of making, wherein the thermosetting reactive compound is a polymeric MDI, and the total amount of 4,4'-MDI in the polymeric MDI ranges from 26 to 98 weight percent based on 100 weight percent of the thermosetting reactive compound. According to any one of claims 1 to 22,
A process for preparing the thermosetting reactive compound, wherein the thermosetting reactive compound has an average isocyanate functionality of 2.1 to 3.5. According to any one of claims 1 to 23,
A method of manufacturing, wherein the stream of (1) further comprises granular material. According to clause 24,
Process according to claim 1, wherein the granular material is preheated in the range of 110 to 240° C. before being introduced into the first input stream (1). According to claim 24 or 25,
A method of manufacturing, wherein the granular material comprises one or more granular materials selected from gravel, recycled asphalt pavement, sand, one or more filler materials, and mixtures of two or more thereof. According to any one of claims 24 to 26,
A production method, wherein the weight ratio of the asphalt mixture composition obtained in (3) to the granular material is in the range of 0.5:99.5 to 25:75. According to any one of claims 1 to 27,
The asphalt composition of (1) is a group consisting of 20 to 30, 30 to 45, 35 to 50, 40 to 60, 50 to 70, 70 to 100, 100 to 150, 160 to 220 and 250 to 330, more preferably The group consisting of 30 to 45, 35 to 50, 40 to 60, 50 to 70, 70 to 100, 100 to 150 and 160 to 220, more preferably 40 to 60, 50 to 70, 70 to 100 and 100 to 150. and more preferably the asphalt composition of (1) has a needle penetration of 50 to 70 or 70 to 100, wherein the needle penetration is measured according to DIN EN 1426. According to any one of claims 1 to 28,
The production method of (1), wherein the asphalt composition includes bitumen modified with one or more compounds selected from thermoplastic elastomers, latex, thermoplastic polymers, thermosetting polymers, and mixtures of two or more thereof. According to clause 29,
Thermoplastic elastomers include styrene butadiene elastomer (SBE), styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), styrene isoprene styrene (SIS), styrene ethylene butadiene styrene (SEBS), ethylene propylene diene terpolymer (EPDT), and isopropyl elastomer. A method of manufacturing, selected from ten isoprene copolymers (IIR), polyisobutene (PIB), polybutadiene (PBD), polyisoprene (PI), and mixtures of two or more thereof. According to any one of claims 1 to 30,
A method of producing the asphalt composition of (1), wherein the asphalt composition includes one or more additives. An asphalt mixture composition obtained or obtainable according to the method of any one of claims 1 to 31. Use of the asphalt mixture composition according to clause 32 for pavement applications. Use of the asphalt mixture composition according to claim 32 for weathering applications.